CODEWITHSUNDEEP
ioscurllibcurlipv6
Ash
Ash

Reputation: 2294

libcurl in iOS with IPv6

The only other thread I could find on this topic (which didn't really help) was this:

https://github.com/curl/curl/issues/594

I'm using libcurl to make API calls to a server. It works fine with IPv4 but as soon as I switch to using WiFi over a IPv6 network, I get a CURL_COULDNT_CONNECT.

I tried to debug to get extra info doing this:

curl_easy_setopt( m_curl, CURL_VERBOSE, 1L );
curl_easy_setopt( m_curl, CURLOPT_DEBUGFUNCTION, my_trace );

Question 1: Is there another way to get more verbose output than checking data in my_trace(CURL* handle, curl_infotype type, char* data, size_t size, void* userp )?

Question2: Checking data above gives me this: "Immediate connect fail for aa.bb.cc.dd: Network is unreachable\n", where the aa.bb.. is some IP. Why does it fail with IPv6?

Upvotes: 0

Views: 892

Answers (1)

Qiulang
Qiulang

Reputation: 12405

"Immediate connect fail for aa.bb.cc.dd" because this is an IPv4 address not an IPV6 address (which will look like aa:bb::cc:dd:... ) You need to use NAT64 to get the IPv6 address first then connect to that address

Upvotes: 2

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